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A directional active loop receiving antenna system by J A Lambert G3FNZ article published on Radcom in november 1982

The HyGain LJ-153BA a monoband 3 element Yagi, designed for the 15 m band 21.00 - 21.45 MHz

The Pecker is a software application that emulates an existing hardware amplifier tuning aid operated in SSB mode as apposed to CW or AM. As such no carrier is used by G7EIX

How to repair a FT1000MP front end, damaged from too much neighbouring RF during contesting

The FieldComm Association, based in Central Virginia, operates as a specialized amateur radio club with a primary interest in emergency communications. Members engage in various technical aspects of radio, including digital modes, QRP operations, and DXing. The association provides a platform for hams to develop skills in field deployment and reliable communication under challenging conditions, often leveraging modern digital protocols. This organization's activities support the practical application of amateur radio for public service, emphasizing readiness and operational proficiency. Members collaborate on projects and share knowledge, fostering expertise in areas like portable station setup and efficient data transmission. The focus on emergency communications distinguishes its operational priorities from general interest clubs, aligning its efforts with community preparedness.

A free small database program for Palm OS that allows you to log ham radio contacts. You can log the call sign, name, date, time and frequency of the contact.

Australia's largest range of Electronic Kits & Components In Stock for the Radio Experimenter, ATV, microwaves, HF Band pass filters

MyHamPlace is a online amateur radio shop based in China dealer for Heilsound, Elecraft, MFJ, Yaesu , Kenwood and other popula ham radio brands

tk3 is open source software designed for the ICOM IC-R3 receiver. Though tk3 is intended chiefly for Linux, MacOS X, and BSD users, it will work on Microsoft Windows too.

Ultra-lightweight 2m Yagi for SOTA

Codec2 is an open source low bit rate speech codec designed for communications quality speech at 2400 bit/s and below. Applications include low bandwidth HF/VHF digital radio and VOIP trunking.

A home made project for a 3 to 12 MHz signal generator

Adam Brown's Blog from Latitude 80.19 South Longitude 81.16 West

Topband and DX recordings and sound files on 160 meters band

Amplifier repair and conversion, specialize in converting HF amplifiers to operate as monoband amps on 50 MHz

The use of dummy load is mandatory for off-air adjustment of the transmitters. Build one.

Skin effect and proximity effect on making coils with stranded wire. An interesting comparison on making coils.

Here's a tale of early '70s vacuum tubes, mainly from the viewpoint of amateur radio.

On-line Log for XR0ZR DxPedition to JuanFernandez

An Arduino uno based project to control an MFJ 998 antenna tuner via Icom CI-V interface by VE1ZAC

A complete EmComm portable station article on eham.net by K9RFZ

A portable USB SO2R box made with Arduino

This circuit came out of some work done for two antenna analysers

Based on a simple project based on a 2 elements Yagi for 20m band, and then becomed a triband yagi with a open-sleeve feed system

A nice post on Make: on homebrewing a multiband antenna for amateur radio portable operations

Technical resource and information on improving ft1000 receiver performance

ScopeDSP analyzes sampled-data signals in the time and frequency domains. It can generate, read, write, window, and plot real and complex digital data signals.

Experiences with Loop antennas at G3YMC include some loop antenna tests and theory by G3LHZ

Here are 10 tips and truisms that every ham should know about antennas, by W20QI

This resource presents a domain name for sale, specifically _Kl7aa.com_, for $995, with an option for a 24-month payment plan at $41.46 per month. The page details the purchasing process, including immediate domain access, zero percent financing, and secure shopping. It also outlines the transfer process to other registrars like _GoDaddy_, clarifies what is included with the domain purchase (only the domain name, not hosting or web design), and explains how to maintain WhoIs privacy protection. The content includes testimonials from buyers like Dann Berg and Greg Shepard, highlighting smooth transactions and quick domain delivery. It also provides information on HugeDomains' 30-day money-back guarantee and frequently asked questions regarding domain transfers, access post-purchase, and payment plans. The page emphasizes the importance of a web address and lists other similar domains for sale, such as _Kl35.com_, alongside quick stats about the domain's length and structure.

A fully equipped amateur radio mobile radio shack by VE6AB

NU-Tech is a powerful DSP platform to validate and real-time debug complex algorithms, simply relying on a common PC. Thanks to an easy plug-in architecture, the developer can write his own NUTSs (NU-Tech Satellites) in C++ and immediately plug them into the graphical interface design environment.

Kingston Amateur Radio Club Articles Dave Lawrence, VA3ORP

An interesting article on guanella baluns that cover several aspects of homebrewing 1:1 and 4:1 current baluns by KN9B

Alternate means of raising your tower with readily available boat and engine hoists. Examples of working tower hoists with links to manufacturers.

We are the premier Amateur Radio Club in the Edinburgh area, since our formation in 1984 we have done much to raise the profile of our hobby in the area.

Building the MFJ Cub QRP transceiver kit for 20 meters band by G4ILO

Quarter wave groundplane antenna for 2 meters FM by AA1PG

Specialize in engineering, design and repair of all rf equipment. Dealer for two way radios, scanners, shortwave radios, wi-fi antennas, wifi amplifiers. Based in Fortuna, California.

The past and future of the Sun's solar cycle and possible impact on the Earth's climate.

Tencom, located near Toledo, Ohio is dedicated to the pultrusion of fiberglass composite products. This includes solid rods, conductor rods, tubes and a variety of custom profiles.

May 2015 Radcom Article on common-mode chokes that can be used for control cables, phone lines, but mostly on typical HF antenna systems. This article explain what common mode chokes does, why you meay need one, properties common mode chokes should have, how to build and measure performances.

Supplying over 2000 different vacuum tube types, valves, grid caps, sockets and capacitors. It is easy for Antique collectors, Ham radio operators, audio enthusiasts, broadcast enthusiasts and amateur radio hobbyists to buy, sell and trade vacuum tubes, electron tubes, audio tubes, valves, grid caps, sockets and capacitors

Interesting article on how and when sleep during a contest

Repair LDF Z-100 toroid by VK4ADC

Full line metal service and retail center, stocking the largest variety of metals in Southern California and Arizona.

N9TEW is supplier of vacuum tubes for ham,audio & antique radio purposes.

Nifty E-Z Guide to EchoLink Operation A comprehensive guide for installing and operating EchoLink.

Radios, Antennas & More dealer from Texas USA